If one is really super concerned about network safety, I think the smart thing to do would be do use a proper hardware firewall. No one will change the rules but a highly skilled hacker (unlikely) and you have more fine/granular control over what gets filtered.
Nowadays, you can do implement one for a very modest cost, too.
S.
Edited by Shplad, 19 May 2024 - 02:09 PM.